Patents by Inventor Zhang Liang

Zhang Liang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11939229
    Abstract: The present invention provides a method for treating a copper-containing waste etching solution, which includes: preparing basic copper chloride nanometer seed crystals and synthesizing basic copper chloride mono-crystals; making an acidic waste etching solution subjected to agglomeration reaction with an ammonium-containing solution and slurry containing the basic copper chloride mono-crystals to obtain basic copper chloride crystal particles and copper-removed waste solution; making an alkaline waste etching solution react with sulfuric acid to obtain a copper sulfate mixed solution; and then evaporating, concentrating, cooling and crystallizing the copper sulfate mixed solution obtained by the reaction of the alkaline waste etching solution and the sulfuric acid in sequence to obtain copper sulfate pentahydrate solids.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: March 26, 2024
    Assignee: Central South University
    Inventors: Zhang Lin, Xu Yan, Xueming Liu, Fandongkun Meng, Yanjie Liang
  • Patent number: 11395396
    Abstract: A system and method for providing high power factor wired lamp control that include receiving a lighting control input though a switch that is associated with at least one of: an operation and a function of at least one lamp. The system and method also include determining if an environment of the at least one lamp includes a connection between a neutral wire and the switch. The system and method additionally include communicating at least one electronic data command associated with the lighting control input to the at least one lamp through an AC power cycle. The system and method further include controlling the at least one lamp to operate based on the lighting control input based on the receipt of the at least one electronic data command communicated through the AC power cycle.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: July 19, 2022
    Assignee: ENERGY FOCUS, INC.
    Inventors: Laszlo A. Takacs, Attila Tomasovics, Greg Flies, David Nicolay, John M. Davenport, Zhang Liang
  • Publication number: 20210227672
    Abstract: A system and method for providing high power factor wired lamp control that include receiving a lighting control input though a switch that is associated with at least one of: an operation and a function of at least one lamp. The system and method also include determining if an environment of the at least one lamp includes a connection between a neutral wire and the switch. The system and method additionally include communicating at least one electronic data command associated with the lighting control input to the at least one lamp through an AC power cycle. The system and method further include controlling the at least one lamp to operate based on the lighting control input based on the receipt of the at least one electronic data command communicated through the AC power cycle.
    Type: Application
    Filed: April 7, 2021
    Publication date: July 22, 2021
    Inventors: Laszlo A. Takacs, Attila Tomasovics, Greg Flies, David Nicolay, John M. Davenport, Zhang Liang
  • Patent number: 11057981
    Abstract: A system and method for providing high power factor wired lamp control that include receiving a lighting control input though a switch that is associated with at least one of: an operation and a function of at least one lamp. The system and method also include processing a digital data packet that includes at least one electronic data command associated with the lighting control input. The system and method additionally include implementing at least one powerline interruption associated with an AC power cycle to communicate the digital data packet to the at least one lamp. The system and method further include controlling the at least one lamp to operate based on the lighting control input based on the receipt of the digital data packet communicated through the AC power cycle.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: July 6, 2021
    Assignee: ENERGY FOCUS, INC.
    Inventors: Laszlo A. Takacs, Attila Tomasovics, Greg Flies, David Nicolay, John Davenport, Zhang Liang, Jay Seifert
  • Publication number: 20210051786
    Abstract: A system and method for providing high power factor wired lamp control that include receiving a lighting control input though a switch that is associated with at least one of: an operation and a function of at least one lamp. The system and method also include processing a digital data packet that includes at least one electronic data command associated with the lighting control input. The system and method additionally include implementing at least one powerline interruption associated with an AC power cycle to communicate the digital data packet to the at least one lamp. The system and method further include controlling the at least one lamp to operate based on the lighting control input based on the receipt of the digital data packet communicated through the AC power cycle.
    Type: Application
    Filed: May 27, 2020
    Publication date: February 18, 2021
    Inventors: Laszlo A. Takacs, Attila Tomasovics, Greg Flies, David Nicolay, John Davenport, Zhang Liang, Jay Seifert
  • Patent number: D754559
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: April 26, 2016
    Assignee: Bloem, LLC
    Inventor: Zhang Liang